/Engine/Plugins/Experimental/Dataflow/Source/DataflowEditor/Public/Dataflow/DataflowEditorCommands.h
typedef [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< void(const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) &MyGeometry, const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) &DragDropEvent)> FOnDragDropEventCallback